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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q17-Q22):

NEW QUESTION # 17
You are planning the monitoring configuration for your Exadata X9M Database Machine.
Which three components are monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins?

A. ASM instances
B. the storage server ILOM
C. the Power Distribution Units (PDUs)
D. Oracle clusterware on the database server
E. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers
F. the RDMA over Converged Ethernet (RoCE) switches

Answer: A,D,E

Explanation:
Exadata-specific Enterprise Manager Plug-Ins are used to monitor different components of the Exadata Database Machine.
1. ASM instances: The Automatic Storage Management (ASM) instances can be monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins. This allows you to monitor the storage space, disk usage, and performance of the ASM instances.
2. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers: The HCC ratios on Extended (XT) storage servers can be monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins. This allows you to monitor the compression ratios and performance of the storage servers.
3. Oracle clusterware on the database server: The Oracle clusterware on the database server can be monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins. This allows you to monitor the health and performance of the clusterware.

NEW QUESTION # 18
How do ASM failure groups provide redundancy?

A. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.
B. They ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster.
C. Failure groups are created for each grid disk to ensure mirror copies are written to the same storage server for faster recovery after a physical disk failure.
D. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.

Answer: A

Explanation:
In an Automatic Storage Management (ASM) environment, failure groups are used to provide redundancy for the storage disks. Failure groups are used to group together a set of disks and ensure that no two copies of the same data are stored on the same physical disk or storage server. This way, if a disk or storage server fails, the data can still be accessed from the other copy.
For example, if the disks in a failure group are mirrored, one copy of the data is stored on one set of disks, and the other copy is stored on another set of disks. This way, if a disk or storage server fails, the data can still be accessed from the other copy.
ASM failure groups also provide the option to spread the data across different storage servers, this way, even if a storage server fails, data can still be accessed from the other storage servers in the group. This will improve the availability of the data.

NEW QUESTION # 19
For which four component failures on an X9M Database Machine does Auto Service Request (ASR) raise service requests?

A. power supplies in the database servers
B. RoCE network interface cards in the database servers
C. RoCE network interface cards in the storage servers
D. power distribution units
E. Cisco management switch
F. Cisco RDMA over Converged Ethernet (RoCE) switches
G. fans in the storage servers

Answer: A,C,E,F

NEW QUESTION # 20
Which statement is true about the Persistent Memory Commit Accelerator?

A. Persistent Memory Commit Accelerator contains logging information from all tiers of the software stack for rapid triage and diagnostics.
B. Persistent Memory Commit Accelerator helps to further reduce redo log write latency by using Persistent Memory and Remote Direct Memory Access (RDMA).
C. Persistent Memory Commit Accelerator reduces redo log write latency by using Persistent Memory and RDMA before flushing to Flash then disk.
D. Persistent Memory Commit Accelerator tracks changes to Persistent Memory Data Accelerator to ensure duplicate blocks are not written to Flash.
E. Persistent Memory Commit Accelerator copies redo log data from disk for faster redo apply on Data Guard Standby Databases.

Answer: B

NEW QUESTION # 21
You are working on a remote Exadata Database Machine with current software and firmware. You now need to start a storage server after hardware maintenance.
Which ILOM command starts the storage server?

A. -> start /System
B. -> start /SYS/power
C. -> start /SP/console
D. You must be physically present in the data center to start an Exadata Storage Server.
E. -> set /SYS power_state=ON
F. -> start /SYSTEM/power

Answer: B

Explanation:
ILOM (Integrated Lights Out Manager) is a remote management system that allows you to control and monitor Exadata Database Machine components, such as storage servers and database servers, from a remote location. The command "start /SYS/power" is used to power on the storage server in the Exadata Database Machine after hardware maintenance. This command can be executed remotely via ILOM.

NEW QUESTION # 22
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